CMMVC8944E The command failed because the volume already has copies in two sites using HyperSwap. Use the addvdiskcopy command to add a second copy in the same site.
Explanation
In HyperSwap® system topology, the addvolumecopy command cannot be used to add a mirrored copy in the same site as an existing volume copy.
User response
Use the addvdiskcopy command to add a second copy in the same site.